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                    1.2019-12-28-数据结构和算法的关系
            
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                    2.2019-12-28-稀疏数组
            
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                    [git]
            
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                    1.2019-12-28-git-alias
            
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                    2.2019-12-29-git常用命令
            
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                    3.2019-12-31-git教程
            
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                    1.2019-12-30-beego基本使用
            
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                    [java]
            
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                    1.2019-12-30-环境变量和系统属性
            
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                    2.2019-12-31-cloud-native-云原生
            
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                    3.2019-12-31-java语法难点
            
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                    4.2019-12-31-设计模式
            
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                    5.2020-01-12-Ajax跨域问题解决方案
            
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                    6.2020-01-12-freemarker应用场景介绍
            
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                    7.2020-01-12-jsp运行原理和运行过程
            
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                    8.2020-01-12-深入理解Maven中的Profile
            
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                    9.2020-01-12-缓存穿透-缓存击穿-缓存雪崩概念及解决方案
            
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                    10.2020-01-13-事务笔记
            
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                    11.2020-01-13-幂等性
            
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                    12.2020-01-16-java基本语法
            
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                    [arthas]
            
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                    1.2019-12-28-arthas-example
            
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                    2.2019-12-28-arthas添加支持执行历史命令的shell功能
            
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                    3.2020-01-10-思考性能调优
            
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                    4.2020-01-10-性能调优举例-最佳实践
            
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                    5.2020-01-10-性能调优举例一
            
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                    6.2020-01-10-性能调优举例三
            
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                    7.2020-01-10-性能调优举例二
            
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                    8.2020-01-10-性能调优举例四
            
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                    9.2020-01-15-性能调优举例五
            
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                    10.2020-05-12-性能调优举例六
            
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                    11.arthas-mind-map
            
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                    [dubbo]
            
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                    1.2019-12-28-dubbo涉及的技术
            
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                    2.2019-12-30-dubbo消费者访问流程
            
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                    3.2019-12-30-dubbo面试
            
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                    [jdk]
            
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                    1.2020-01-12-实例介绍 JAVA 泛型基础
            
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                    2.2020-01-13-ThreadLocal六连问
            
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                    [jvm]
            
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                    1.2019-12-30-性能调优
            
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                    [netty]
            
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                    1.2020-01-16-netty入门
            
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                    2.2020-01-16-netty核心概念
            
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                    [solr]
            
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                    1.2019-12-28-solr-7.6.0.tgz安装
            
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                <span>
            
                    
                    [spring]
            
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        <li class="chapter " data-level="2.13.1" data-path="../java/spring/2020-01-12-SpringBoot属性读取方式介绍.html">
            
                <a href="../java/spring/2020-01-12-SpringBoot属性读取方式介绍.html">
            
                    
                    1.2020-01-12-SpringBoot属性读取方式介绍
            
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        <li class="chapter " data-level="2.13.2" data-path="../java/spring/2020-01-12-使用spring boot+mybatis plus快速入门.html">
            
                <a href="../java/spring/2020-01-12-使用spring boot+mybatis plus快速入门.html">
            
                    
                    2.2020-01-12-使用spring boot+mybatis plus快速入门
            
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        <li class="chapter " data-level="2.13.3" data-path="../java/spring/2020-01-13-spring-initMethod-destoryMethod.html">
            
                <a href="../java/spring/2020-01-13-spring-initMethod-destoryMethod.html">
            
                    
                    3.2020-01-13-spring-initMethod-destoryMethod
            
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        <li class="chapter " data-level="2.13.4" data-path="../java/spring/2020-01-13-spring循环依赖.html">
            
                <a href="../java/spring/2020-01-13-spring循环依赖.html">
            
                    
                    4.2020-01-13-spring循环依赖
            
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                    5.2020-01-13-spring源码随记
            
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        <li class="chapter " data-level="2.13.6" data-path="../java/spring/2020-01-13-自定义mini-spring.html">
            
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                    6.2020-01-13-自定义mini-spring
            
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                <span>
            
                    
                    [websocket]
            
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                <a href="../java/websocket/2019-12-30-webscoket-springboot通信.html">
            
                    
                    1.2019-12-30-webscoket-springboot通信
            
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                <span>
            
                    
                    [linux]
            
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        <li class="chapter " data-level="2.15.1" data-path="2019-12-28-Linux常用命令和快捷键.html">
            
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                    1.2019-12-28-Linux常用命令和快捷键
            
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                <a href="2019-12-28-从零到一环境安装.html">
            
                    
                    2.2019-12-28-从零到一环境安装
            
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                    3.2019-12-30-vi-常用命令
            
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                    4.2019-12-31-awk命令
            
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                    5.2019-12-31-cup信息分析
            
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                    6.2019-12-31-shell编程
            
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                    7.2019-12-31-top命令
            
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                    8.2019-12-31-普通用户docker的问题
            
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                    9.2020-01-01-centos7 安装kubernetes
            
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                    10.2020-01-01-centos安装常用配置
            
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                    11.2020-01-01-docker使用
            
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        <li class="chapter " data-level="2.15.12" data-path="2020-01-01-kubernetes使用.html">
            
                <a href="2020-01-01-kubernetes使用.html">
            
                    
                    12.2020-01-01-kubernetes使用
            
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                    13.2020-05-12-PG有用的SQL
            
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        <li class="chapter " data-level="2.15.14" data-path="2020-05-12-vim命令.html">
            
                <a href="2020-05-12-vim命令.html">
            
                    
                    14.2020-05-12-vim命令
            
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                    [automate]
            
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                <a href="automate/2020-01-12-redis伪集群创建脚本.html">
            
                    
                    1.2020-01-12-redis伪集群创建脚本
            
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                    2.2020-01-12-tomcat集群创建脚本
            
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                    3.2020-01-12-zookeeper自动化脚本
            
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                    4.2020-01-12-其他自动化脚本
            
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                    [MySQL]
            
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                    1.2019-12-31-mysql常用命令
            
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                    [nginx]
            
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                    1.2019-12-29-Nginx-Keepalived高可用集群
            
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                    2.2020-01-16-nginx参数详细说明
            
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                    [other]
            
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                    1.2019-12-28-知识小计
            
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                    2.2020-01-04-科学上网
            
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                    3.2020-05-13-正则表达式
            
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                    4.template
            
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                    [PostgreSQL]
            
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                    1.2019-12-28-PostgreSQL安装文档
            
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                    2.2019-12-28-Postgres学习笔记
            
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        <li class="chapter " data-level="2.20.3" data-path="../PostgreSQL/2019-12-28-脚本MYSQL导出数据到PG.html">
            
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                    3.2019-12-28-脚本MYSQL导出数据到PG
            
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        <li class="chapter " data-level="2.20.4" data-path="../PostgreSQL/2020-01-04-docker-PostgreSQL安装文档.html">
            
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                    4.2020-01-04-docker-PostgreSQL安装文档
            
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        <li class="chapter " data-level="2.20.5" data-path="../PostgreSQL/2020-01-17-阿里云PG主从切换问题.html">
            
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                    5.2020-01-17-阿里云PG主从切换问题
            
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            </ul>
            
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                    [python]
            
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                    1.2019-12-28-pip-install指定国内源镜像
            
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                    2.2019-12-30-python内置函数
            
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        <li class="chapter " data-level="2.21.3" data-path="../python/2019-12-30-一图搞懂基本python语法 .html">
            
                <a href="../python/2019-12-30-一图搞懂基本python语法 .html">
            
                    
                    3.2019-12-30-一图搞懂基本python语法 
            
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                    [redis]
            
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                    1.2019-12-28-redis5.0.3安装
            
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        <li class="chapter " data-level="2.22.2" data-path="../redis/2019-12-28-redis5.0.3集群搭建.html">
            
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                    2.2019-12-28-redis5.0.3集群搭建
            
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                    [tool]
            
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                    1.2019-12-28-idea高效使用技巧和快捷键
            
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                    2.2019-12-28-PlantUML画图脚本
            
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                    3.2019-12-30-vscode高效使用
            
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                    2.2020-01-12-注册bat为windows服务
            
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                                <h2 id="awk&#x547D;&#x4EE4;">awk&#x547D;&#x4EE4;</h2>
<p>[kduser@v-k8s-smartpos ~]$ htop #&#x67E5;&#x770B;&#x7CFB;&#x7EDF;&#x8D44;&#x6E90;&#x4F7F;&#x7528;
[kduser@v-k8s-smartpos ~]$ ll /usr/bin/awk 
lrwxrwxrwx. 1 root root 4 Apr 20  2018 /usr/bin/awk -&gt; gawk
&#x53C2;&#x8003;&#xFF1A; <a href="https://blog.csdn.net/wade3015/article/details/92578511" target="_blank">https://blog.csdn.net/wade3015/article/details/92578511</a></p>
<p>awk&#x5176;&#x5B9E;&#x662F;&#x4E00;&#x95E8;&#x7F16;&#x7A0B;&#x8BED;&#x8A00;&#xFF0C;&#x5B83;&#x652F;&#x6301;&#x6761;&#x4EF6;&#x5224;&#x65AD;&#x3001;&#x6570;&#x7EC4;&#x3001;&#x5FAA;&#x73AF;&#x7B49;&#x529F;&#x80FD;&#x3002;&#x6240;&#x4EE5;&#xFF0C;&#x6211;&#x4EEC;&#x4E5F;&#x53EF;&#x4EE5;&#x628A;awk&#x7406;&#x89E3;&#x6210;&#x4E00;&#x4E2A;&#x811A;&#x672C;&#x8BED;&#x8A00;&#x89E3;&#x91CA;&#x5668;&#x3002;</p>
<h2 id="&#x4E09;&#x5251;&#x5BA2;">&#x4E09;&#x5251;&#x5BA2;</h2>
<p>grep &#x3001;sed&#x3001;awk&#x88AB;&#x79F0;&#x4E3A;linux&#x4E2D;&#x7684;&quot;&#x4E09;&#x5251;&#x5BA2;&quot;&#x3002;</p>
<p>&#x6211;&#x4EEC;&#x603B;&#x7ED3;&#x4E00;&#x4E0B;&#x8FD9;&#x4E09;&#x4E2A;&quot;&#x5251;&#x5BA2;&quot;&#x7684;&#x7279;&#x957F;&#x3002;</p>
<p>grep &#x66F4;&#x9002;&#x5408;&#x5355;&#x7EAF;&#x7684;&#x67E5;&#x627E;&#x6216;&#x5339;&#x914D;&#x6587;&#x672C;</p>
<p>sed  &#x66F4;&#x9002;&#x5408;&#x7F16;&#x8F91;&#x5339;&#x914D;&#x5230;&#x7684;&#x6587;&#x672C;</p>
<p>awk  &#x66F4;&#x9002;&#x5408;&#x683C;&#x5F0F;&#x5316;&#x6587;&#x672C;&#xFF0C;&#x5BF9;&#x6587;&#x672C;&#x8FDB;&#x884C;&#x8F83;&#x590D;&#x6742;&#x683C;&#x5F0F;&#x5904;&#x7406;</p>
<h2 id="awk&#x57FA;&#x7840;">awk&#x57FA;&#x7840;</h2>
<p>&#x6B64;&#x5904;&#xFF0C;&#x6211;&#x4EEC;&#x53EA;&#x603B;&#x7ED3; awk</p>
<p>awk&#x57FA;&#x672C;&#x8BED;&#x6CD5;&#x5982;&#x4E0B;&#xFF0C;&#x770B;&#x4E0D;&#x61C2;&#x6CA1;&#x5173;&#x7CFB;&#xFF0C;&#x6211;&#x4EEC;&#x4F1A;&#x6162;&#x6162;&#x4E3E;&#x4F8B;&#x3002;</p>
<p>awk [options] &apos;program&apos; file1 , file2 , ```</p>
<p>&#x5BF9;&#x4E8E;&#x4E0A;&#x8FF0;&#x8BED;&#x6CD5;&#x4E2D;&#x7684;program&#x6765;&#x8BF4;&#xFF0C;&#x53C8;&#x53EF;&#x4EE5;&#x7EC6;&#x5206;&#x6210;pattern&#x548C;action&#xFF0C;&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#xFF0C;awk&#x7684;&#x57FA;&#x672C;&#x8BED;&#x6CD5;&#x5982;&#x4E0B;</p>
<p>awk [options] &apos;Pattern{Action}&apos; file</p>
<p>&#x4ECE;&#x5B57;&#x9762;&#x4E0A;&#x7406;&#x89E3; &#xFF0C;action&#x6307;&#x7684;&#x5C31;&#x662F;&#x52A8;&#x4F5C;&#xFF0C;awk&#x64C5;&#x957F;&#x6587;&#x672C;&#x683C;&#x5F0F;&#x5316;&#xFF0C;&#x5E76;&#x4E14;&#x5C06;&#x683C;&#x5F0F;&#x5316;&#x4EE5;&#x540E;&#x7684;&#x6587;&#x672C;&#x8F93;&#x51FA;&#xFF0C;&#x6240;&#x4EE5;awk&#x6700;&#x5E38;&#x7528;&#x7684;&#x52A8;&#x4F5C;&#x5C31;&#x662F;print&#x548C;printf&#xFF0C;&#x56E0;&#x4E3A;awk&#x8981;&#x628A;&#x683C;&#x5F0F;&#x5316;&#x5B8C;&#x6210;&#x540E;&#x7684;&#x6587;&#x672C;&#x8F93;&#x51FA;&#x554A;&#xFF0C;&#x6240;&#x4EE5;&#xFF0C;&#x8FD9;&#x4E24;&#x4E2A;&#x52A8;&#x4F5C;&#x6700;&#x5E38;&#x7528;&#x3002;</p>
<h2 id="&#x793A;&#x4F8B;">&#x793A;&#x4F8B;</h2>
<p>&#x6211;&#x4EEC;&#x5148;&#x4ECE;&#x6700;&#x7B80;&#x5355;&#x7528;&#x6CD5;&#x5F00;&#x59CB;&#x4E86;&#x89E3;awk&#xFF0C;&#x6211;&#x4EEC;&#x5148;&#x4E0D;&#x4F7F;&#x7528;[options] ,&#x4E5F;&#x4E0D;&#x6307;&#x5B9A;pattern&#xFF0C;&#x76F4;&#x63A5;&#x4F7F;&#x7528;&#x6700;&#x7B80;&#x5355;&#x7684;action&#xFF0C;&#x4ECE;&#x800C;&#x5F00;&#x59CB;&#x8BA4;&#x8BC6;awk&#xFF0C;&#x793A;&#x4F8B;
[kduser@v-k8s-smartpos awkdir]$ echo ddd&gt;testd
[kduser@v-k8s-smartpos awkdir]$ cat testd
ddd
[kduser@v-k8s-smartpos awkdir]$ awk &apos;{print}&apos; testd
ddd</p>
<p>&#x6211;&#x4EEC;&#x53EA;&#x662F;&#x4F7F;&#x7528;awk&#x6267;&#x884C;&#x4E86;&#x4E00;&#x4E2A;&#x6253;&#x5370;&#x7684;&#x52A8;&#x4F5C;&#xFF0C;&#x5C06;testd&#x6587;&#x4EF6;&#x4E2D;&#x7684;&#x5185;&#x5BB9;&#x6253;&#x5370;&#x4E86;&#x51FA;&#x6765;&#x3002;
&#x597D;&#x4E86;&#xFF0C;&#x73B0;&#x5728;&#xFF0C;&#x6211;&#x4EEC;&#x6765;&#x64CD;&#x4F5C;&#x4E00;&#x4E0B;&#x53E6;&#x4E00;&#x4E2A;&#x7C7B;&#x4F3C;&#x7684;&#x573A;&#x666F;&#x3002;</p>
<pre><code class="lang-shell">[kduser@v-k8s-smartpos awkdir]$ df
Filesystem           1K-blocks     Used Available Use% Mounted on
/dev/mapper/Vol-root  20961280  8053744  12907536  39% /
devtmpfs               8201740        0   8201740   0% /dev
tmpfs                  8213648   129516   8084132   2% /dev/shm
tmpfs                  8213648   831864   7381784  11% /run
tmpfs                  8213648        0   8213648   0% /sys/fs/cgroup
/dev/mapper/Vol-home  10475520  5816636   4658884  56% /home
/dev/mapper/Vol-var  164300800 54561732 109739068  34% /var
/dev/mapper/Vol-tmp   10475520    33888  10441632   1% /tmp
/dev/sda1               303780   141708    162072  47% /boot
tmpfs                  1642732        0   1642732   0% /run/user/1002
tmpfs                  1642732        0   1642732   0% /run/user/0
[kduser@v-k8s-smartpos awkdir]$ df | awk &apos;{print $5}&apos;
Use%
39%
0%
2%
11%
0%
56%
34%
1%
47%
0%
</code></pre>
<p>&#x4E0A;&#x56FE;&#x4E2D;&#x7684;&#x793A;&#x4F8B;&#x6CA1;&#x6709;&#x4F7F;&#x7528;&#x5230;options&#x548C;pattern&#xFF0C;&#x4E0A;&#x56FE;&#x4E2D;&#x7684;awk &apos;{print $5}&apos;&#xFF0C;&#x8868;&#x793A;&#x8F93;&#x51FA;df&#x7684;&#x4FE1;&#x606F;&#x7684;&#x7B2C;5&#x5217;&#xFF0C;$5&#x8868;&#x793A;&#x5C06;&#x5F53;&#x524D;&#x884C;&#x6309;&#x7167;&#x5206;&#x9694;&#x7B26;&#x5206;&#x5272;&#x540E;&#x7684;&#x7B2C;5&#x5217;&#xFF0C;&#x4E0D;&#x6307;&#x5B9A;&#x5206;&#x9694;&#x7B26;&#x65F6;&#xFF0C;&#x9ED8;&#x8BA4;&#x4F7F;&#x7528;&#x7A7A;&#x683C;&#x4F5C;&#x4E3A;&#x5206;&#x9694;&#x7B26;&#xFF0C;&#x7EC6;&#x5FC3;&#x7684;&#x4F60;&#x4E00;&#x5B9A;&#x53D1;&#x73B0;&#x4E86;&#xFF0C;&#x4E0A;&#x8FF0;&#x4FE1;&#x606F;&#x7528;&#x7684;&#x7A7A;&#x683C;&#x4E0D;&#x6B62;&#x6709;&#x4E00;&#x4E2A;&#xFF0C;&#x800C;&#x662F;&#x6709;&#x8FDE;&#x7EED;&#x591A;&#x4E2A;&#x7A7A;&#x683C;&#xFF0C;awk&#x81EA;&#x52A8;&#x5C06;&#x8FDE;&#x7EED;&#x7684;&#x7A7A;&#x683C;&#x7406;&#x89E3;&#x4E3A;&#x4E00;&#x4E2A;&#x5206;&#x5272;&#x7B26;&#x4E86;&#xFF0C;&#x662F;&#x4E0D;&#x662F;&#x6BD4;cut&#x547D;&#x4EE4;&#x8981;&#x7B80;&#x5355;&#x5F88;&#x591A;&#xFF0C;&#x8FD9;&#x6837;&#x6BD4;&#x8F83;&#x7B80;&#x5355;&#x7684;&#x4F8B;&#x5B50;&#xFF0C;&#x6709;&#x5229;&#x4E8E;&#x6211;&#x4EEC;&#x5F00;&#x59CB;&#x4E86;&#x89E3;awk&#x3002;</p>
<p>awk&#x662F;&#x9010;&#x884C;&#x5904;&#x7406;&#x7684;&#xFF0C;&#x9010;&#x884C;&#x5904;&#x7406;&#x7684;&#x610F;&#x601D;&#x5C31;&#x662F;&#x8BF4;&#xFF0C;&#x5F53;awk&#x5904;&#x7406;&#x4E00;&#x4E2A;&#x6587;&#x672C;&#x65F6;&#xFF0C;&#x4F1A;&#x4E00;&#x884C;&#x4E00;&#x884C;&#x8FDB;&#x884C;&#x5904;&#x7406;&#xFF0C;&#x5904;&#x7406;&#x5B8C;&#x5F53;&#x524D;&#x884C;&#xFF0C;&#x518D;&#x5904;&#x7406;&#x4E0B;&#x4E00;&#x884C;&#xFF0C;awk&#x9ED8;&#x8BA4;&#x4EE5;&quot;&#x6362;&#x884C;&#x7B26;&quot;&#x4E3A;&#x6807;&#x8BB0;&#xFF0C;&#x8BC6;&#x522B;&#x6BCF;&#x4E00;&#x884C;&#xFF0C;&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#xFF0C;awk&#x8DDF;&#x6211;&#x4EEC;&#x4EBA;&#x7C7B;&#x4E00;&#x6837;&#xFF0C;&#x6BCF;&#x6B21;&#x9047;&#x5230;&quot;&#x56DE;&#x8F66;&#x6362;&#x884C;&quot;&#xFF0C;&#x5C31;&#x8BA4;&#x4E3A;&#x662F;&#x5F53;&#x524D;&#x884C;&#x7684;&#x7ED3;&#x675F;&#xFF0C;&#x65B0;&#x7684;&#x4E00;&#x884C;&#x7684;&#x5F00;&#x59CB;&#xFF0C;awk&#x4F1A;&#x6309;&#x7167;&#x7528;&#x6237;&#x6307;&#x5B9A;&#x7684;&#x5206;&#x5272;&#x7B26;&#x53BB;&#x5206;&#x5272;&#x5F53;&#x524D;&#x884C;&#xFF0C;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x6307;&#x5B9A;&#x5206;&#x5272;&#x7B26;&#xFF0C;&#x9ED8;&#x8BA4;&#x4F7F;&#x7528;&#x7A7A;&#x683C;&#x4F5C;&#x4E3A;&#x5206;&#x9694;&#x7B26;&#x3002;</p>
<p>$0 &#x8868;&#x793A;&#x663E;&#x793A;&#x6574;&#x884C; &#xFF0C;$NF&#x8868;&#x793A;&#x5F53;&#x524D;&#x884C;&#x5206;&#x5272;&#x540E;&#x7684;&#x6700;&#x540E;&#x4E00;&#x5217;&#xFF08;$0&#x548C;$NF&#x5747;&#x4E3A;&#x5185;&#x7F6E;&#x53D8;&#x91CF;&#xFF09;</p>
<p>&#x6CE8;&#x610F;&#xFF0C;$NF &#x548C; NF &#x8981;&#x8868;&#x8FBE;&#x7684;&#x610F;&#x601D;&#x662F;&#x4E0D;&#x4E00;&#x6837;&#x7684;&#xFF0C;&#x5BF9;&#x4E8E;awk&#x6765;&#x8BF4;&#xFF0C;$NF&#x8868;&#x793A;&#x6700;&#x540E;&#x4E00;&#x4E2A;&#x5B57;&#x6BB5;&#xFF0C;NF&#x8868;&#x793A;&#x5F53;&#x524D;&#x884C;&#x88AB;&#x5206;&#x9694;&#x7B26;&#x5207;&#x5F00;&#x4EE5;&#x540E;&#xFF0C;&#x4E00;&#x5171;&#x6709;&#x51E0;&#x4E2A;&#x5B57;&#x6BB5;&#x3002;</p>
<p>&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#xFF0C;&#x5047;&#x5982;&#x4E00;&#x884C;&#x6587;&#x672C;&#x88AB;&#x7A7A;&#x683C;&#x5206;&#x6210;&#x4E86;7&#x6BB5;&#xFF0C;&#x90A3;&#x4E48;NF&#x7684;&#x503C;&#x5C31;&#x662F;7&#xFF0C;$NF&#x7684;&#x503C;&#x5C31;&#x662F;$7,  &#x800C;$7&#x8868;&#x793A;&#x5F53;&#x524D;&#x884C;&#x7684;&#x7B2C;7&#x4E2A;&#x5B57;&#x6BB5;&#xFF0C;&#x4E5F;&#x5C31;&#x662F;&#x6700;&#x540E;&#x4E00;&#x5217;&#xFF0C;&#x90A3;&#x4E48;&#x6BCF;&#x884C;&#x7684;&#x5012;&#x6570;&#x7B2C;&#x4E8C;&#x5217;&#x53EF;&#x4EE5;&#x5199;&#x4E3A;$(NF-1)&#x3002;</p>
<p>&#x6211;&#x4EEC;&#x4E5F;&#x53EF;&#x4EE5;&#x4E00;&#x6B21;&#x8F93;&#x51FA;&#x591A;&#x5217;&#xFF0C;&#x4F7F;&#x7528;&#x9017;&#x53F7;&#x9694;&#x5F00;&#x8981;&#x8F93;&#x51FA;&#x7684;&#x591A;&#x4E2A;&#x5217;&#xFF0C;&#x5982;&#x4E0B;&#xFF0C;&#x4E00;&#x6B21;&#x6027;&#x8F93;&#x51FA;&#x7B2C;&#x4E00;&#x5217;&#x548C;&#x7B2C;&#x4E8C;&#x5217;</p>
<p>AWK &#x5305;&#x542B;&#x4E24;&#x79CD;&#x7279;&#x6B8A;&#x7684;&#x6A21;&#x5F0F;&#xFF1A;BEGIN &#x548C; END&#x3002;</p>
<p>BEGIN &#x6A21;&#x5F0F;&#x6307;&#x5B9A;&#x4E86;&#x5904;&#x7406;&#x6587;&#x672C;&#x4E4B;&#x524D;&#x9700;&#x8981;&#x6267;&#x884C;&#x7684;&#x64CD;&#x4F5C;&#xFF1A;</p>
<p>END &#x6A21;&#x5F0F;&#x6307;&#x5B9A;&#x4E86;&#x5904;&#x7406;&#x5B8C;&#x6240;&#x6709;&#x884C;&#x4E4B;&#x540E;&#x6240;&#x9700;&#x8981;&#x6267;&#x884C;&#x7684;&#x64CD;&#x4F5C;&#xFF1A;</p>

                                
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